body
{
    margin:0;
    text-align:center;
    background-color:#cff3ff;
    }
.first
{
    width:100%;
    height:140px; 
    padding-top:60px;
    }
.logo
{
    margin:0 auto;
    text-align:center;
    width:495px;
    height:117px;
    background:url(../images/Logo.gif) no-repeat;
    }
 .second
 {
    width:100%;
    height:156px; 
   background:url(../images/bgtopr.gif);
     }
 .secondcontent
 {
      margin:0 auto;
    text-align:center;
     width:1366px;
     height:156px;
     background:url(../images/bgtop.gif) no-repeat;
     }    
  .trid
  {
     
    width:100%;
    height:297px; 
      }
  .tridcontent
  {
      margin:0 auto;
    text-align:center;
      width:490px;
      height:297px;
      background:url(../images/bgmiddle.gif) no-repeat;
      }
  .txtName
  {
      padding-left:5px;
      margin-top:60px;
      font-weight:bold;
       width:300px;
        height:26px; 
        font-size:18px;
      }
  .txtPwd
  {
      padding-left:5px;
      margin-top:58px;
      width:300px; 
      height:26px;
       font-size:18px;
      }
  .btnSubmit
  {
      margin-left:150px;
      margin-top:30px;
      width:186px; 
      height:40px; 
      background:url(../images/btnLogin.gif) no-repeat;
      }